Compaq Contec COM-2(PC)F Bedienungsanleitung PDF herunterladen (Seite 33)

Hardware Setup

COM-2(PC)F24

I/O Address Setting

The board is an I/O device controlled by I/O instructions from the

PC. I/O devices include expansion boards and devices inside the

PC. The various devices are identified by their I/O addresses.

I/O addresses are represented as four digit hexadecimal values

(e.g. 02A0H) and act as the ID number for each I/O device.

Most expansion boards are controlled via a range of consecutive I/O

addresses. The address of the first I/O address in the range is

called the base I/O address.

When using Enhanced mode, either 1A0H or 2A0H is selected as

the base I/O address. In Compatible mode, the fixed address for

the PC system is used.

Notes!

1. When using more than one expansion board, set each board so

that their I/O addresses do not overlap.

2. If the PC already has COM1 to COM4 ports, those ports cannot

be set for the board.

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Compaq Contec COM-2(PC)F Bedienungsanleitung Seite 33